Few people know that since the emergence of sound in computer systems technology far ahead.It is now used to all that the tracks are played in the best case in MP3.In fact, it was not always, and audio in computer systems has been focused only on the use of system dynamics.Those games created for DOS, working in this mode.
first sound
actually the first in a series of sound production that could "squeeze" of the then computer systems, it is associated with the emergence of primitive DOS and games, designed to work in it.Not to mention the Super Mario, borrowed from Nintendo, there were also the type of 3D-shooter Duke Nukem, who were trying to convey the essence of gameplay with stereo sound.However, all this did not make absolutely no impression, because professional music and edit audio tracks remained inaccessible.
appearance of codecs
revolution took place when he was released versatile codec allows to compress files and play everything that can be recorded with a microphone.By the time the expansion of the sound files had only one schematic representation, namely, WAV (by reducing the "Wave").
However WAV-files take up too much space on your hard drive.Let's just say, even today, the track in a format for five minutes of sound can "weigh" to 25-50 MB, depending on the quality.Eventually, it became clear that the size of the audio file should not be too large.
Studio audio
Now a little about the technologies.In terms of recording an audio file - this is what every musician can play in real time and record to a computer or a special device in the studio.Is not the point.The fact that absolutely all the programs for recording sessions in the studio, still use the format WAV, how would it be desirable to do without it.In some cases, it can automatically be transformed into another (after recording).Most often this happens with programs like (Pro Tools), which are intended for use only in systems Mac OS X.
But even in this case the sound file - a component of the initial format, which does not lose its relevance.The explanation is simple.In fact, in the studios of the professional level no one ever uses compressed files, including their parody of pure sound.Of course, the extension of audio files after recording can be anything.In some cases, WAV-file can be temporary.That is, after recording the audio track, they are simply removed from the hard drive.
modern audio formats
codec on the market today that are compatible with audio devices or software players, quite a lot.However, if someone noticed, even in the descriptions of some of the films meet codecs such as AAC, H.264, or something like that.You should not create problems for yourself.It is enough to install on your computer the latest version of, say, K-Lite Codec Pack, and the problem will disappear by themselves.But this is not important.Here refers to the encoding of audio files and audio decoding.And this can occur quite a lot of difficulties.
Audio playback: the main characteristics of
Audio file formats directly related to their parameters in which they were created or saved initially.But not only affect the quality of playback.
First of all, you need to pay attention to the frequency characteristics.The program is able to understand that the sound file - this is a common frequency or amplitude characteristic in the form of waves, previously reproduced on the same oscilloscope.The main characteristics in this case are the depth of play, expressed in bits (16, 24, 32), frame rate (a measure of playback data per second), usually at a level of from 32 to 450 kbit / s and the sampling frequency to 96 kHz.
Generally, the standard adopted by the frequency of 44,100 Hz, although professional musicians and producers use the value of the order of 48 or 96 kHz.
without which you can not do
Now a little about what the extension of audio files has a very long life.It is not customary to speak only about the MP3, because higher quality characteristics is still the format FLAC.
It has its drawbacks.The fact is that if the system is not lined with a particular codec, normal switching between tracks is impossible.Roughly speaking, any software player will perceive as a whole recorded an audio track.The same AIMP initially sets its own codecs and setup in terms of what kind of sound formats the player can play.
So, if you decided to download the audio in this format, you need to be sure that the player will perceive it.In addition, the frequency response can overwhelm any player (especially when using third-party plug-ins and extensions).
processing of sound and subtleties associated with this process
now stands separately dwell on the problem of how to produce audio processing, even if the original track is available in the video.To do this, there are many software packages, among which stands out especially programs like Sound Forge, Adobe Audition, Mixcraft, etc.
They all obey the same principle of sound processing - namely, the submission of any format in the form of "waves".
Editing this way allows you to not only understand what is "kind of sound files", but to realize that any audio can be stored in a suitable option for themselves.
Here there are so many tools are not just for audio editing but also the use of additional funds, which are now referred to as "plug-ins» (plugin).In other words, it is a third-party application that is connected to the interface of the basic package of software programs which is a supplement to the core functionality.Processing of audio files to their use becomes more sophisticated than using own funds of a program.
In the end, we can see that a sound file - that's what we hear today on the same radio.Even record the conversation on tape, we still get a sound file.Some older models of mobile devices, the format may vary.For example, the expansion of the sound file is stored even in an obsolete format AMR.
final representation of sound
now is focus on the fact that today all kinds of media files can be opened using applications that perform cross-platform communication between the main system components.
For example, if before the WAV-file is just a wave, is now linked in any other format in the same way.Regardless of the format, many software can open the same OGG, which in the standard version simply unable to work (without installed codec).
In fact, everything is simple.If you understand what the sound (audio) files, then you can even write music, what, in fact, engaged DJs representing the dubstep or something like that.The main thing - to the crowd, "raged".
Here, too, has its own nuances.The fact that modern discotheques audio files in the form of drum sequences can be programmed initially.To do this, that and created a special "racks" racks for DJs.
From the perspective of a professional musician, a sound file that you created in the disco, when the people raging, can not be compared with the fact that the offer "live" performers.Even banks
instruments most popular synthesizers and workstations in a series of Roland Fantom X (all series) or the Yamaha Motif X8 (and higher) are now available in format SF2.
Of course, it's not all that can make professional tools.But!If someone has ever played them, immediately I feel that the program sound file when encoding is no different from the original sound, even in format SF2.
In conclusion, the sound file - a set of commands synthesizer that has a MIDI-structure (internal), distributing tools for one track, while the effects of others.In any case, there are universal modules that combine all these features.And achieved the separation of tracks on "Tools" and "effect."
